A shaft fixture for facilitating camber load testing of tires

Abstract

This utility model discloses a shaft fixture for facilitating camber load testing of tires, belonging to the technical field of tire performance testing equipment. It includes a rigid spindle, a fulcrum mechanism, a locking component, an arc-shaped guide component, and a tire mounting block. A fulcrum mechanism is located at one end of the rigid spindle, and a tire mounting block is located in the middle section of the rigid spindle. The locking component is located at the other end of the rigid spindle. The arc-shaped guide component is inserted into the locking component, and its center coincides with the axis of the rigid spindle. This invention solves the problem in existing technologies where the fixed horizontal structure of the load-bearing platform results in a single testing condition, making it difficult to obtain performance data under multiple camber angles and accurately reflect the behavior of the tire under complex stress conditions. It features a rigid frame that forms a stable camber angle under load, thereby obtaining accurate test data and significantly improving testing efficiency and the ability to simulate real-world conditions.

Description

Technical Field

[0001] This utility model relates to the technical field of tire performance testing equipment, specifically to a shaft tooling that facilitates camber load testing of tires. Background Technology

[0002] In the field of tire performance testing, camber load testing is crucial for simulating camber angle conditions during actual vehicle driving and is a key step in evaluating the true performance of tires. However, most widely used tire load testing machines currently employ a fixed horizontal platform, relying on a rigid straight shaft to fix the tire and rim assembly for testing. This structure has a fundamental flaw: it cannot adjust the tire mounting angle, resulting in a single testing condition, making it difficult to obtain performance data under multiple camber angles, and failing to truly reflect the tire's behavior under complex stress conditions.

[0003] To overcome the limitation of a non-adjustable platform, the traditional approach is to modify the angle of the testing machine platform. However, this solution is costly, structurally complex, and risks compromising the original accuracy and stability of the equipment. It also lacks versatility and is difficult to apply to the numerous non-adjustable angle testing machines on the market. Addressing this core issue, the market urgently needs a modular fixture that can directly replace existing rigid straight shafts. This fixture must enable convenient and reliable adjustment of the tire mounting angle without altering the testing machine platform, providing multiple stable settings to adapt to different testing needs, and ensuring sufficient rigidity and angular stability under load. This would allow for the expansion of existing equipment's testing capabilities at the lowest cost, filling the gap in tilt load testing.

[0004] Therefore, how to provide a shaft fixture that facilitates camber load testing of tires and solves the problem of limited testing conditions caused by existing fixed horizontal structures is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] Therefore, this utility model provides a shaft fixture that facilitates camber load testing of tires, in order to solve the problem in the prior art that the test conditions are limited due to the fixed horizontal structure of the bearing platform, making it difficult to obtain performance data under multiple camber angles and failing to truly reflect the behavior of tires under complex stress conditions.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model discloses a shaft fixture that facilitates camber load testing of tires, comprising:

[0008] A rigid spindle is provided with a fulcrum mechanism at one end, and a tire mounting block is provided in the middle section of the rigid spindle;

[0009] A locking component is provided at the other end of the rigid spindle;

[0010] An arc-shaped guide member is inserted into the locking member, and the center of the arc-shaped guide member coincides with the axis of the rigid spindle.

[0011] In one possible implementation, the rigid spindle includes a shaft and a first through hole, with the first through hole provided at one end of the shaft and the locking member installed at the other end of the shaft.

[0012] In one possible implementation, the fulcrum mechanism includes:

[0013] The first support part has a connecting part installed at one end, and a through groove is provided at one end of the connecting part along the axial direction.

[0014] The second through hole is symmetrically arranged and is opened on the outer wall of the connecting part;

[0015] The first connector is inserted into the first through hole and the second through hole.

[0016] In one possible implementation, the arc-shaped guide member includes:

[0017] The outer wall of the housing has an arc-shaped slide rail on the side facing the rigid spindle;

[0018] Several positioning holes are symmetrically arranged and equally spaced on the outer wall of the housing;

[0019] The second support is installed on the outer wall of the other side of the housing.

[0020] In one possible implementation, the locking member includes:

[0021] A slider is installed at one end of the rigid spindle and is inserted into the slide rail.

[0022] The third through hole is formed on the outer wall where the slider and the slide rail fit together;

[0023] The second connector is inserted into the third through hole and the positioning hole.

[0024] In one possible implementation, the sidewall of the tire mounting block is provided with several limiting through holes.

[0025] This utility model has the following advantages:

[0026] This invention replaces the traditional rigid straight shaft with a design comprising a rigid main shaft, a fixed fulcrum mechanism, a slider, and an arc-shaped slide rail with equidistant positioning holes. This achieves convenient and reliable adjustment and locking of the tire mounting angle without requiring modifications to the existing testing machine's non-adjustable bearing platform. The structure directly utilizes the existing fixed points of the testing machine. The movement of the slider along the arc-shaped slide rail drives the main shaft to rotate around the fixed fulcrum, and the angle is locked by inserting a pin into the positioning holes. This ensures a rigid frame and stable tilt angle under load, thereby obtaining accurate test data and significantly improving testing efficiency and the ability to simulate real-world working conditions. Attached Figure Description

[0027] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0028] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0029] Figure 1 A perspective view of the shaft tooling provided by this utility model for facilitating tilt load testing of tires;

[0030] Figure 2 A three-dimensional view of the rigid spindle provided by this utility model;

[0031] Figure 3 A perspective view of the fulcrum mechanism provided for this utility model;

[0032] Figure 4 A perspective view of the arc-shaped guide component provided by this utility model;

[0033] Figure 5 A perspective view of the locking component provided by this utility model;

[0034] Figure 6 A perspective view of the tire mounting block provided for this utility model;

[0035] Figure 7 A schematic diagram of the rigid spindle working condition adjustment state provided by this utility model.

[0036] In the figure: 1 Rigid spindle; 11 Shaft; 12 First through hole; 2 Pivot mechanism; 21 First support part; 22 Connecting part; 23 Second through hole; 24 First connecting piece; 25 Through groove; 3 Locking component; 31 Slider; 32 Third through hole; 33 Second connecting piece; 4 Arc-shaped guide component; 41 Housing; 42 Slide rail; 43 Positioning hole; 44 Second support part; 5 Tire mounting block; 51 Limiting through hole. Detailed Implementation

[0037] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0038] Please refer to Figures 1-6 The present invention will now describe a shaft fixture that facilitates camber load testing of tires, as disclosed in this utility model. Figure 1 It includes a rigid spindle 1, a fulcrum mechanism 2, a locking component 3, an arc-shaped guide component 4, and a tire mounting block 5. The fulcrum mechanism 2 is provided at one end of the rigid spindle 1, the tire mounting block 5 is provided in the middle section of the rigid spindle 1, the locking component 3 is provided at the other end of the rigid spindle 1, the arc-shaped guide component 4 is inserted into the locking component 3, and the center of the arc-shaped guide component 4 coincides with the axis of the rigid spindle 1.

[0039] In use, this invention first securely installs the first support part 21 of the fulcrum mechanism 2 and the second support part 44 of the arc-shaped guide member 4 onto the original fixed points on the left and right sides of the testing machine's bearing platform, completely replacing the original rigid straight shaft. Then, the tire rim is fixed onto the tire mounting block 5 in the middle section of the rigid main shaft 1. When adjusting the tire camber angle, first pull out the second connecting piece 33 used to lock the angle in the locking member 3, and then slide the slider 31 along the arc-shaped slide rail 42 of the arc-shaped guide member 4. This sliding action will cause the rigid main shaft 1 to rotate precisely around its left end and the hinge point of the fulcrum mechanism 2, thereby changing the tire camber angle. After adjusting to the desired angle, reinsert the second connecting piece 33 into the third through hole 32 and the corresponding positioning hole 43 of the slider 31 to achieve rigid locking of the camber angle. After confirming that all connections are secure and reliable, the testing machine can be started to apply a load to the tire for performance testing. During this process, the locked fixture forms a highly rigid frame structure that effectively resists load deformation, ensuring that the preset tilt angle remains absolutely stable throughout the test, thereby obtaining accurate and reliable test data. When testing different tilt angles, simply readjust and lock the new angle following the steps described above.

[0040] In a specific embodiment, such as Figure 2 The rigid spindle 1 includes a shaft 11 and a first through hole 12. One end of the shaft 11 has the first through hole 12, and the other end is fitted with a locking component 3. The shaft 11, as the core of the rigid spindle 1, serves as the load-bearing frame, replacing the rigid straight rod of a traditional testing machine. The first through hole 12 at its left end is a key structure forming the rotation fulcrum. This through hole is precisely aligned with the second through hole 23, and a hinged connection is achieved between the shaft 11 and the fulcrum mechanism 2 by inserting a first connecting member 24 (preferably a pin). This hinge point defines the fixed axis of rotation of the shaft 11 during tilt adjustment and load testing. A slider 31 of the locking component 3 is installed at the right end, causing the shaft to rotate around the left hinge point to change the tire tilt angle. A tire mounting block 5 is fixed in the middle section to bear the tire load. Under load conditions, the shaft 11, with its high rigidity, transmits force to both ends, ensuring tilt stability and testing accuracy.

[0041] In a specific embodiment, such as Figure 3 The fulcrum mechanism 2 includes a first support portion 21, a connecting portion 22, a second through hole 23, a first connector 24, and a through groove 25. The connecting portion 22 is mounted on one end of the first support portion 21, and a through groove 25 is axially formed on one end of the connecting portion 22. The second through holes 23 are symmetrically arranged and formed on the outer wall of the connecting portion 22, with the central axis of the second through holes 23 perpendicular to the central axis of the connecting portion 22. The first connector 24 is inserted into the first through hole 12 and the second through hole 23. The first support portion 21 serves as the connecting base between the fulcrum mechanism 2 and the testing machine platform. Its core function is to firmly fix the entire fulcrum mechanism to the existing fixing point (such as bolt hole) on the left side of the bearing platform to form an installation foundation. One end of the connecting portion 22 is fixedly connected to the first support portion 21, and the other end forms a clamping structure through the axially formed through groove 25, used to clamp the shaft 11 to ensure no loosening under load. The second through hole 23, symmetrically formed on the outer wall of the connecting part 22, is coaxially aligned with the first through hole 12 at the left end of the shaft 11, allowing the first connecting piece 24 to be inserted through, thereby achieving a hinged connection between the shaft 11 and the fulcrum mechanism 2. This hinge point constitutes the physical pivot of the shaft 11's rotation, and the design of the through groove 25 is more adapted to the motion curve of the shaft 11. Under load conditions, the tire force is transmitted through the shaft 11 to the connecting part 22, then distributed to the first support part 21, and finally borne by the platform fixing point.

[0042] In a specific embodiment, such as Figure 4The arc-shaped guide component 4 includes a housing 41, a slide rail 42, positioning holes 43, and a second support part 44. The outer wall of the housing 41 facing the rigid spindle 1 has an arc-shaped slide rail 42. The center of the virtual circle formed by the arc structure of the slide rail 42 coincides with the rotation axis of the rigid spindle 1. Several positioning holes 43 are symmetrically arranged and equally spaced on the outer wall of the housing 41. The central axis of the positioning holes 43 is parallel to the horizontal section of the slide rail 42. The second support part 44 is installed on the other outer wall of the housing 41. The outer shell 41 serves as the rigid base of the arc-shaped guide component 4. An arc-shaped slide rail 42 is provided on the side facing the rigid main shaft 1. The center of the slide rail coincides with the hinge axis of the fulcrum mechanism 2, providing a sliding trajectory for the slider 31 of the locking component 3. This ensures that the tilt angle changes without deviation when the shaft 11 rotates around the left fixed fulcrum. Multiple positioning holes 43 symmetrically opened at equal angles on the outer wall of the outer shell 41 cooperate with the third through hole 32 of the slider 31. By inserting the second connecting piece 33, the preset tilt angle is rigidly locked, ensuring test stability. The second support part 44, which is fixed to the back side of the outer shell 41, is directly anchored to the original fixed point on the right side of the test machine's bearing platform. Together with the left fulcrum mechanism 2, it forms a double-end support foundation. Without modifying the test machine, the load is distributed and transferred to the platform through the peripheral wall of the slide rail 42 and the locking structure of the positioning holes 43, ultimately achieving the core objective of high-precision, high-rigidity, and conveniently adjustable tilt load testing.

[0043] In a specific embodiment, such as Figure 5 The locking component 3 includes a slider 31, a third through hole 32, and a second connecting member 33. The slider 31 is installed at one end of the rigid spindle 1 and inserted into the slide rail 42. The third through hole 32 is opened on the outer wall of the slider 31 that fits against the slide rail 42. The second connecting member 33 is inserted into the third through hole 32 and the positioning hole 43. The slider 31 is fixed to the right end of the rigid spindle 11, and its bottom is slidably connected to the arc-shaped slide rail 42. The tire tilt angle is adjusted by rotating the drive shaft 11 around the left fulcrum. During the movement, the third through hole 32 on the slider 31 aligns with the positioning hole 43 on the arc-shaped guide component 4. The second connecting member 33 (preferably a pin) passes through the two holes to form a rigid lock, thereby fixing the tilt angle. Under load, the tire force is transmitted through the slider 31 to the contact surface of the slide rail 42 and the second connecting member 33 for dual-path bearing, ensuring the tilt angle is stable during the test and fully realizing the functions of adjusting the tilt angle with the slider and locking the gear with the pin.

[0044] In a specific embodiment, such as Figure 6 The tire mounting block 5 has several limiting through holes 51 on its side wall. As the hub for tire force transmission, the tire mounting block 5 has several limiting through holes 51 on its end face that precisely match the mainstream wheel rim bolt hole standards, so as to rigidly press and fix the tire and wheel rim assembly to the end face of the mounting block.

[0045] In a specific embodiment, such as Figure 7 The adjustable tilt angle corresponding to positioning hole 43 has an adjustment range of α°, 0°≤α°≤5°. This range is a scientific definition based on tire mechanics models, high-precision indexing machining, and multiple load tests. It not only meets the stringent requirements of global mainstream testing standards for tilt angle coverage but also provides a zero-modification upgrade solution for non-adjustable platform testing machines, achieving a core effect that combines innovation and industrial value.

[0046] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A shaft pole tooling for facilitating a camber load test of a tire, characterized by, include: A rigid spindle (1) is provided with a fulcrum mechanism (2) at one end, and a tire mounting block (5) is provided in the middle section of the rigid spindle (1). A locking member (3) is disposed at the other end of the rigid spindle (1); An arc-shaped guide member (4) is inserted into the locking member (3), and the center of the arc-shaped guide member (4) coincides with the axis of the rigid main shaft (1).

2. The axle stem tooling for facilitating the camber load test of a tire of claim 1, wherein, The rigid spindle (1) includes a shaft (11) and a first through hole (12). One end of the shaft (11) is provided with the first through hole (12), and the other end of the shaft (11) is equipped with the locking member (3).

3. The shaft fixture for facilitating camber load testing of tires as described in claim 2, characterized in that, The fulcrum mechanism (2) includes: The first support part (21) has a connecting part (22) installed at one end, and a through groove (25) is provided at one end of the connecting part (22) along the axial direction; The second through hole (23) is symmetrically arranged and is opened on the outer wall of the connecting part (22); The first connector (24) is inserted into the first through hole (12) and the second through hole (23).

4. The shaft fixture for facilitating camber load testing of tires as described in claim 1, characterized in that, The arc-shaped guide member (4) includes: The outer wall of the outer casing (41) facing the rigid spindle (1) has an arc-shaped slide rail (42); A number of positioning holes (43) are symmetrically arranged and equally spaced on the outer wall of the housing (41); a second support (44) is installed on the other side of the outer wall of the housing (41).

5. The shaft fixture for facilitating camber load testing of tires as described in claim 4, characterized in that, The locking member (3) includes: A slider (31) is installed at one end of the rigid spindle (1), and the slider (31) is inserted into the slide rail (42); The third through hole (32) is formed on the outer wall where the slider (31) and the slide rail (42) fit together; The second connector (33) is inserted into the third through hole (32) and the positioning hole (43).

6. The shaft fixture for facilitating camber load testing of tires as described in claim 1, characterized in that, The tire mounting block (5) has several limiting through holes (51) on its side wall.

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